SOURCE: Codes P0303, P0451,P0440- gas cap replaced 2X check engine light
PO303 # 3 cylinder miss fire: check ign coil and wires,
PO451
PO440: looks like perhaps something to do with the fuel line change! i would look further into it before traveling far perhaps a really well reputed garage can help?????
SOURCE: Vehicle dies while driving down the road.
could it be the A/C pump kicking in. might be boging down the motor or electrical circuit, not letting the injectors get enough power. This could happen if the bearings are going bad in th A/C pump or there is a short in it. Just an idea. sounds like you have done the main components.
SOURCE: Jerking and Dying while driving(highway)
Start with changing the fuel filter. If that doesn't do it, then change the fuel pump.
SOURCE: Fuel pressure intermittently drops causing sputter and die.
check for 12v constant at your fuel pump if you are not getting that replace your relay.
if you are getting 12 volts at your fuel pump the fuel pump is possible to run tuel it gets warm then shut down to a lower rpm I would then replace the fuel pump
SOURCE: 06 chevy silverado 1500 starts and runs a few min. then dies
did u change your fuel filter? Check fuel pressure with key on engine
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